Input Sensing Device and Display Device Having the Same

2. The display device according to claim 1, wherein the horizontal synchronization signal defines a period in which a line image is output through pixels included in a same line among the pixels.

3. The display device according to claim 1, wherein a period in which each of the driving signals has the sine wave shape overlaps a period in which a pulse of the horizontal synchronization signal is generated.

4. The display device according to claim 1, wherein a cycle of the driving signals is different from a cycle of the horizontal synchronization signal.

5. The display device according to claim 1, wherein a period in which each of the driving signals has the sine wave shape overlaps a blank period in which no data signal is provided to the pixels, within one frame.

6. The display device according to claim 1, wherein the input sensing circuit provides the driving signals to the electrodes while avoiding a period in which a pulse of a vertical synchronization signal defining a start of the frame is generated.

7. The display device according to claim 6, wherein the input sensing circuit stops supply of the driving signals in the period in which the pulse of the vertical synchronization signal is generated.

8. The display device according to claim 6, wherein the driving signals are synchronized with the vertical synchronization signal.

9. The display device according to claim 6, wherein each of the driving signals has a reference value in the period in which the pulse of the vertical synchronization signal is generated.

10. The display device according to claim 9, wherein a period in which each of the driving signals has the reference value coincides with the period in which the pulse of the vertical synchronization signal is generated.

11. The display device according to claim 1, wherein the charge amplifier is a full differential amplifier.

12. The display device according to claim 11, wherein the charge amplifier is configured to output the first differential signal through a first output terminal by differentially amplifying the first sensing signal applied through a first input terminal and the second sensing signal applied through a second input terminal, and to output the second differential signal having a waveform in which a phase of the first differential signal is reversed through a second output terminal.

13. The display device according to claim 1, further comprising a negative capacitor coupled to each of the analog front-ends.

16. The display device according to claim 15, wherein each of the analog front-ends further comprises a negative capacitor coupled to each of input terminals of the multiplexer.

19. The display device according to claim 18, wherein each of the first pattern and the second pattern has a mesh structure.